<template>
	<div class="wrapper">

		<!-- header部分 -->
		<header>
			<p>商家列表</p>
		</header>

		<!-- 商家列表部分 -->
		<ul class="business">
			<li v-for="item in businessArr" @click="toBusinessInfo(item.businessId)" :key="item.id">
				<div class="business-img">
					<img :src="item.businessImg">
					<div class="business-img-quantity" v-show="item.quantity > 0">{{ item.quantity }}</div>
				</div>
				<div class="business-info">
					<h3>{{ item.businessName }}</h3>
					<p>&#165;{{ item.starPrice }}起送 | &#165;{{ item.deliveryPrice }}配送</p>
					<p>{{ item.businessExplain }}</p>
				</div>
			</li>
		</ul>

		<!-- 底部菜单部分 -->
		<Footer></Footer>

	</div>
</template>

<script>
import Footer from '../components/Footer.vue';

export default {
	name: 'BusinessList',
	data() {
		return {
			orderTypeId: this.$route.query.orderTypeId,
			businessArr: [],
			user: {}
		}
	},
	created() {
		this.user = this.$getSessionStorage('user');
		


		//根据orderTypeId查询商家信息
		this.$axios.get('business/listBusinessByOrderTypeId', {
			params: {
				orderTypeId: this.orderTypeId
			},

		}

		).then(response => {
			this.businessArr = response.data.data;
			//判断是否登录
			if (this.user != null) {
				this.listCart();
			}
		}).catch(error => {
			console.error(error);
		});
	},
	components: {
		Footer
	},
	methods: {
		listCart() {
			
			this.$axios.get('carts/listCart', {
				
				params:{
					userId: this.user.data.userId
				}
				
			}).then(response => {
				let cartArr = response.data;
				//遍历所有食品列表
				for (let businessItem of this.businessArr) {
					businessItem.quantity = 0;
					for (let cartItem of cartArr) {
						if (cartItem.businessId == businessItem.businessId) {
							businessItem.quantity += cartItem.quantity;
						}
					}
				}
				this.businessArr.sort();
			}).catch(error => {
				console.error(error);
			});
		},
		toBusinessInfo(businessId) {
			this.$router.push({ path: '/businessInfo', query: { businessId: businessId } });
		}
	}
}
</script>

<style scoped>
/****************** 总容器 ******************/
.wrapper {
	width: 100%;
	height: 100%;
}

/****************** header部分 ******************/
.wrapper header {
	width: 100%;
	height: 12vw;
	background-color: #0097FF;
	color: #fff;
	font-size: 4.8vw;

	position: fixed;
	left: 0;
	top: 0;
	z-index: 1000;

	display: flex;
	justify-content: center;
	align-items: center;
}

/****************** 商家列表部分 ******************/
.wrapper .business {
	width: 100%;
	margin-top: 12vw;
	margin-bottom: 14vw;
}

.wrapper .business li {
	width: 100%;
	box-sizing: border-box;
	padding: 2.5vw;
	border-bottom: solid 1px #DDD;
	user-select: none;
	cursor: pointer;

	display: flex;
	align-items: center;
}

.wrapper .business li .business-img {
	/*这里设置为相当定位，成为business-img-quantity元素的父元素*/
	position: relative;
}

.wrapper .business li .business-img img {
	width: 20vw;
	height: 20vw;
}

.wrapper .business li .business-img .business-img-quantity {
	width: 5vw;
	height: 5vw;
	background-color: red;
	color: #fff;
	font-size: 3.6vw;
	border-radius: 2.5vw;

	display: flex;
	justify-content: center;
	align-items: center;

	/*设置成绝对定位，不占文档流空间*/
	position: absolute;
	right: -1.5vw;
	top: -1.5vw;
}

.wrapper .business li .business-info {
	margin-left: 3vw;
}

.wrapper .business li .business-info h3 {
	font-size: 3.8vw;
	color: #555;
}

.wrapper .business li .business-info p {
	font-size: 3vw;
	color: #888;
	margin-top: 2vw;
}
</style>
